Phylogenetic relationship of HLB-associated bacteria and their relative species. (A) Detailed information of Liberibacter species whose genomes were investigated in this study, including their evolutionary relationship, transmitted vectors, hosts, and associated diseases. The evolutionary relationship was derived from phylogenetic trees of 16S rRNA (B), 23S rRNA (C), and DNA polymerase I (D). (B to D) The phylogenetic trees were inferred using the maximum likelihood (ML) method, where the supporting values from 100 bootstrap are shown for major branches only. The outgroup clades have a gray background.